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I think there would have to be a very big crisis for the government to shut down GPS signals to the entire US.

Instead of degrading the signal now, they can shut off signals to a certian area at threat, like a city or section of a state. This would be a lot more likely, and it probably would not be for very long.

I've heard they do a lot of testing of these capabilities, the only place in Maine I know of is in Waterville, I beleive it's near where an old steam train is.

I've heard they do a lot of testing of these capabilities, the only place in Maine I know of is in Waterville, I beleive it's near where an old steam train is.

He he heh...

Considering the array of people, companies, towns, cities, and states that use this as part of their daily schedule, I find it highly unlikely that this will happen to such an extreme that caching would be affected. If it does, then we'll move to maps. WaldenRun does it, we can too!

I actually thought that the Prez had disabled the system around the time of the political conventions. Literally, one minute our GPS was working, and the next minute it couldn't find any satellites! Turned out that our ancient GPS had given up the ghost, not the system......